Advanced water filtration made easy - The Select S3 filters and purifies water of chemicals, pesticides, bacteria, protozoa, viruses and heavy metals in just 10 seconds as well as improving taste and odors.

Sawyer International says:

Enjoy safe, clean water anywhere in the world with Sawyer Select Water Filters and Purifiers which remove virtually all contaminants found in fresh water while also improving taste and odor. Available in three models, these systems combine a proprietary foam membrane in an durable silicone bottle with our 0.1 micron hollow fiber filter at the top — ensuring access to clean water in the backcountry, while you travel, at the office, or for emergencies.

The Foam Adsorption Technology used in these systems was developed with a partnership with Foamulations LLC to now be able to safely remove contaminants like heavy metals, chemicals, pesticides, and viruses while also improving taste and odor. Adsorption filtration is the process in which molecules adhere to the surface of the adsorbent foam membrane. This highly advanced filtration and purification process, combined with our 0.1 micron absolute filter will ensure that any and all particulate or pathogens above 0.1 microns are filtered out of your water, including bacteria, protozoa, cysts, dirt and sediment.

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John is hiking the Lone Star Trail in Texas and is worried about pesticides from agricultural run-off. He is taking the S1.

Larry is a youth pastor taking a team to Fiji and is staying in a hotel. He wants to make sure his team is drinking safe water so each person is carrying an S1.

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Andrew is going on a paddle trip in Mexico to a region with a known Rotavirus outbreak. He taking the S2.

Jane is working at Dadaab refugee camp in Kenya and is worried about hepatitis E contamination so she is using the S2.

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Sally is traveling abroad and is concerned about industrial pollutants in the water. She is taking the S3.

James is prepping for a natural disaster and wants a filter he can use in case the water supply is contaminated so he chose the S3.

The three Sawyer Select systems reduce chemicals down to 0.5 parts per billion (up to 40 times lower than the EPA’s maximum recommended level) and reduce pesticides down to 0.01 parts per billion (400 times lower than the EPA’s maximum).

The Select S2 and Select S3 models go even further, purifying contaminated water from suspect sources, with the S2 filtering out 99.99% of viruses.

The Select S3 filters out 99.99% of viruses but also reduces heavy metals such as copper, arsenic, and mercury down to 0.5 parts per billion (up to 260 times lower than the EPA’s maximum).

Below is a table to help you decide on which of the three Select Systems is right for you.

I have been walking the First World War front line. I was not going to drink water purified by steritabs or basic filters as the farmers there seem to chuck a huge amount of chemicals on their fields, judging from the watercourses. Shops are infrequent, so I often had to put up with 3 litres of water to tide me over to the next shop. Not any more. This saves carrying surplus water long distances AND sidetracking to shops. I have used canals, water troughs and streams and it seemed to work well as I am still standing. I used it last walking Offa's Dyke and I never carried more than 800 grams of water; I just filled up as and when. I can't recommend this highly enough; it is a real weight saver.